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Segments - Operating Segments (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Segment Reporting Information [Line Items]    
Total revenue $ 1,249 $ 1,883
Total operating profit (loss) $ (88) $ (1,950)
Percentage as of operating profit (loss) to revenue (7.00%) (103.60%)
Operating Segments [Member] | Wellbore Technologies [Member]    
Segment Reporting Information [Line Items]    
Total revenue $ 413 $ 691
Total operating profit (loss) $ (14) $ (663)
Percentage as of operating profit (loss) to revenue (3.40%) (95.90%)
Operating Segments [Member] | Completion & Production Solutions [Member]    
Segment Reporting Information [Line Items]    
Total revenue $ 439 $ 675
Total operating profit (loss) $ (17) $ (1,013)
Percentage as of operating profit (loss) to revenue (3.90%) (150.10%)
Operating Segments [Member] | Rig Technologies [Member]    
Segment Reporting Information [Line Items]    
Total revenue $ 431 $ 557
Total operating profit (loss) $ (8) $ (202)
Percentage as of operating profit (loss) to revenue (1.90%) (36.30%)
Intersegment Eliminations [Member]    
Segment Reporting Information [Line Items]    
Total revenue $ (34) $ (40)
Total operating profit (loss) $ (49) $ (72)